Struct script::dom::bindings::record::Record

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pub struct Record<K: RecordKey, V> {
    map: IndexMap<K, V>,
}
Expand description

The Record (open-ended dictionary) type.

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§map: IndexMap<K, V>

Implementations§

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impl<K: RecordKey, V> Record<K, V>

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pub fn new() -> Self

Create an empty Record.

Methods from Deref<Target = IndexMap<K, V>>§

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pub fn capacity(&self) -> usize

Computes in O(1) time.

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pub fn hasher(&self) -> &S

Return a reference to the map’s BuildHasher.

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pub fn len(&self) -> usize

Return the number of key-value pairs in the map.

Computes in O(1) time.

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pub fn is_empty(&self) -> bool

Returns true if the map contains no elements.

Computes in O(1) time.

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pub fn iter(&self) -> Iter<'_, K, V>

Return an iterator over the key-value pairs of the map, in their order

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pub fn keys(&self) -> Keys<'_, K, V>

Return an iterator over the keys of the map, in their order

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pub fn values(&self) -> Values<'_, K, V>

Return an iterator over the values of the map, in their order

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pub fn contains_key<Q>(&self, key: &Q) -> boolwhere
    Q: Hash + Equivalent<K> + ?Sized,

Return true if an equivalent to key exists in the map.

Computes in O(1) time (average).

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pub fn get<Q>(&self, key: &Q) -> Option<&V>where
    Q: Hash + Equivalent<K> + ?Sized,

Return a reference to the value stored for key, if it is present, else None.

Computes in O(1) time (average).

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pub fn get_key_value<Q>(&self, key: &Q) -> Option<(&K, &V)>where
    Q: Hash + Equivalent<K> + ?Sized,

Return references to the key-value pair stored for key, if it is present, else None.

Computes in O(1) time (average).

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pub fn get_full<Q>(&self, key: &Q) -> Option<(usize, &K, &V)>where
    Q: Hash + Equivalent<K> + ?Sized,

Return item index, key and value

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pub fn get_index_of<Q>(&self, key: &Q) -> Option<usize>where
    Q: Hash + Equivalent<K> + ?Sized,

Return item index, if it exists in the map

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pub fn get_index(&self, index: usize) -> Option<(&K, &V)>

Get a key-value pair by index

Valid indices are 0 <= index < self.len()

Computes in O(1) time.

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pub fn first(&self) -> Option<(&K, &V)>

Get the first key-value pair

Computes in O(1) time.

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pub fn last(&self) -> Option<(&K, &V)>

Get the last key-value pair

Computes in O(1) time.

Trait Implementations§

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impl<K: Clone + RecordKey, V: Clone> Clone for Record<K, V>

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fn clone(&self) -> Record<K, V>

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<K: RecordKey, V> Deref for Record<K, V>

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type Target = IndexMap<K, V, RandomState>

The resulting type after dereferencing.
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fn deref(&self) -> &IndexMap<K, V>

Dereferences the value.
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impl<K, V, C> FromJSValConvertible for Record<K, V>where
    K: RecordKey,
    V: FromJSValConvertible<Config = C>,
    C: Clone,

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type Config = C

Optional configurable behaviour switch; use () for no configuration.
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unsafe fn from_jsval(
    cx: *mut JSContext,
    value: HandleValue<'_>,
    config: C
) -> Result<ConversionResult<Self>, ()>

Convert val to type Self. Optional configuration of type T can be passed as the option argument. If it returns Err(()), a JSAPI exception is pending. If it returns Ok(Failure(reason)), there is no pending JSAPI exception.
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impl<K, V> JSTraceable for Record<K, V>where
    K: JSTraceable + RecordKey,
    V: JSTraceable,

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unsafe fn trace(&self, tracer: *mut JSTracer)

Trace self.
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impl<K, V> ToJSValConvertible for Record<K, V>where
    K: RecordKey,
    V: ToJSValConvertible,

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unsafe fn to_jsval(&self, cx: *mut JSContext, rval: MutableHandleValue<'_>)

Convert self to a JSVal. JSAPI failure causes a panic.

Auto Trait Implementations§

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impl<K, V> RefUnwindSafe for Record<K, V>where
    K: RefUnwindSafe,
    V: RefUnwindSafe,

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impl<K, V> Send for Record<K, V>where
    K: Send,
    V: Send,

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impl<K, V> Sync for Record<K, V>where
    K: Sync,
    V: Sync,

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impl<K, V> Unpin for Record<K, V>where
    K: Unpin,
    V: Unpin,

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impl<K, V> UnwindSafe for Record<K, V>where
    K: UnwindSafe,
    V: UnwindSafe,

Blanket Implementations§

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impl<T> Any for Twhere
    T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere
    T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere
    T: ?Sized,

const: unstable · source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for Twhere
    U: From<T>,

const: unstable · source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> MaybeBoxed<Box<T, Global>> for T

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fn maybe_boxed(self) -> Box<T, Global>

Convert
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impl<T> MaybeBoxed<T> for T

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fn maybe_boxed(self) -> T

Convert
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impl<T> Pointable for T

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const ALIGN: usize = mem::align_of::<T>()

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> Same<T> for T

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type Output = T

Should always be Self
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impl<T> ToOwned for Twhere
    T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for Twhere
    U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere
    U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
const: unstable · source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for Twhere
    V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>where
    S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
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impl<T> Erased for T